DEVICE FOR CREATION OF LOW-FREQUENCY NAVIGATION MAGNETIC FIELD Russian patent published in 2024 - IPC G01R33/389 G01C21/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering and is intended to create in space an alternating low-frequency magnetic field with known spatial and temporal characteristics, which is used in magnetometric systems of local air navigation as a navigation field. Device for creation of low-frequency navigation magnetic field consists of two mutually orthogonally located solenoids containing the first and the second inductance coils arranged on magnetic conductors, in-series connected signal generator and phase changer. First leads of the first and second inductance coils are connected to each other and grounded. Magnetic cores are installed in one plane. Device additionally includes third and fourth inductance coils wound on magnetic conductors of the first and second solenoids, respectively, the first and second capacitors, series-connected magnetic field sensor, phase difference measuring unit, control unit and direct current source. Output of the direct current source is connected to the first leads of the third and fourth inductance coils, the second leads of which are connected to the second input of the direct current source. Output of the signal generator is connected to the second input of the phase difference measuring unit and through the first capacitor to the second output of the first inductance coil. Phase shifter output is connected through the second capacitor to the second inductance coil output.

EFFECT: high accuracy of determining location and orientation of a navigation object in space due to high stability of parameters of the low-frequency navigation magnetic field.

1 cl, 2 dwg